Question: Draw a chair conformation of cyclohexane with one group and one group that fits each description.
The stereoisomers that are easily convertible into one another by rotating about the carbon-carbon sigma bond are called conformational isomers.
These are further represented as staggered and eclipsed conformations.
a. The structure of 1,1-disubstituted cyclohexane with an axial ethyl group is shown in the structure below:
b. The structure of cis-1,2 disubstituted cyclohexane with an axial methyl group is shown below:
The ethyl group in the above structure is in the equatorial position.
c. The trans 1,3 disubstituted cyclohexane with an equatorial methyl group is shown in the following structure:
In the above structure, the methyl group is now present at the equatorial position, and the ethyl group is present at the axial position.
d. The trans-1,4 disubstituted cyclohexane with an equatorial ethyl group is shown in the structure below:
The ethyl group, as well as the methyl group in the above structure, are present at equatorial positions.
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